ci: enable beta uv support for dependabot

Author: moldhouse

.github/dependabot.yml

@@ -4,8 +4,9 @@
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 
 version: 2
+enable-beta-ecosystems: true
 updates:
-  - package-ecosystem: "pip"
+  - package-ecosystem: "uv"
     directory: "/"
     schedule:
       interval: "weekly"